Safety-razor-blade sharpener.



P. D. HAUSER. SAFETY RAZOR BLADE SHAHPENER. APPLICATION FILED Aumo, 191s.

Patented May 8, 1917.

w u@ @an l/l l PETER D. HUSER, OIE' ANTONIO, TEXAS.

SAFETY-RAZOR-BLADE SHARPENER Speccation of Letters Patent.

Patented May 191%'.

Application filed August 10, 1916. Serial No. 114,192.

To all whom t may concern:

Be it known that I, PETER D. Hansen, a citizen of the United States, and resident of San Antonio, in the county of Bexar and State of Texas, have invented certain new and useful Improvements in Safety-Razor- Blade Sharpeners, of which the following is a specification.

The present invention relates to the art of grinding and polishing and has particular reference to new and useful improvements in safety razor blade sharpening machines.

The primary object of my invention is to provide a machine of the class described having a novel and improved arrangement of metal grinding elements, said elements revolving simultaneously adjacent each other for sharpening objects engaged therewith.

Another object of my invention is t0 provide a machine of the class described having a novel holdervfor blades of various types for bringing the blade into contact automatically alternately with each one of the grinding elements, and thereby to act upon.

both sides of the blade to produce a keen cutting edge.

, A further object of my invention is to provide in combination with a plurality of grinding elements means for bringing a blade to be sharpened alternately into engagement with said elements, said means being yieldable, that is, the blade being yieldably Aengaged with the grinding snrface.

A still further object of my invention is to provide in combination with grinding elements a holder foran object to be ground which is adapted to firmly grasp the object to be ground and removably placed in the machine, said holder being readily inserted and `.removed from operative position while the niachineis running or when the same is stationary. v

Other objects and advantages to be derived from the use of my improved sharpening machine will appear from the following detailed description and the claims, talen with an inspection of the accompanying drawing, in which:

Figure 1 is a top plan view of a sharpening machine embodying the improvements of my-invention;

Fig. 2 is a vertical longitudinal sectional view of the same; and

sharpening mechanism, said housing preferably being rectangular and having a base portion 2, side walls 3 and end walls 4., An extension 5 is formed on the body 1 for con-` necting the body to a table or any other stationary object.

The grinding elements of my invention include rollers 6 and 7 arranged in parallel spaced relation and carried by shafts 8 and 9,' said shafts having bearings 10 and 11 in the side walls 3 of the housing 1.. The rollers 6 and 7 are provided with abrasive surfaces 12 and 13 for performing the sharpening process. The rollers G and 7 are provided with gears 14 and 15 at adjacent ends',

said gears being inintermeshing engage-v ment, so that movement of one of the rollers is attended by simultaneousmovement of the other roller. -i-"i pawl 16 pivoted at 17 on one of the side walls 3 engages the gear 14 to prevent reverse rotation of the rollers.

Motion is imparted to the roller 7 and thence to the roller 6 bynieans of a shaft 18 having a gear 19 mounted thereon and rotatable therewith, said gear 19 being in meshing engagement with the gear l5 as best shown in Fig. 2. A roller 20 is mounted upon the shaft 18 and rotatable therewith, said roller having an abrasive covering 21 for sharpening `lniives' and ordinary razor blades. An einery `wher-l Q2 is mounted on the free end of the shaft 18 for an obvious purpose. A crank 23 posite end of the shaft 18 for imparting motion thereto.

The work holder is designated #24 and is preferably formed of a. sheet of metal bent at 25 and having a rod 2G extending therethrough, said rod forming bearings for reception in recesses 52"? formed in the upper marginal edges of the side walls 3 of the housing 1.` The rod F26 is welded or otherwise permanently connected with the work holder 2st. The work holder, as bent, is formed with gripping j awe Q8, said gripping jaws being inherently resilient and maintained in gripping engagement with an object by means of a screw 29 extending therethrough, said screw having a wing nut or is mounted on the opf 'of the rollers 6 and 7 a pair of spring tongues 32 and 33 are formed on the jaws 28 of the work holder 24. A pair of cam surfaces 34 and 35 are formed on the rollers 6 and 7, said cam surfaces being adapted to,

at times, come into engagement with thev spring tongues 32 and 33 to oscillate the work holder. The cams are arranged at different points on their respective rollers so as to alternately shift the work holder to bring the blade 31 into engagement with the ab asive surfaces of said rollers.

It will be seen that in the provision of my improved sharpening device I have afforded means for quickly and easily sharpening safety razor blades and the like. 0f course, it is to be understood that while I have de* scribed my device as particularly adapted for use in sharpening safety razor blades I do -not limit myself to this use of the device. I desire to lay particular stress upon the n'ovel'and improved means of oscillating the work holder, namely, the cams carried on the rollers 6 and 7.

From the above description taken in connection with the4 accompanying drawing, it is thought that a clear and comprehensive understanding of the construction, operation and advantages of my invention may be had, and while I have shown and described the Adevice as embodying a specific structure, I desire that it be understood that such maan/aa changes may be made in said structure as do not depart from the spirit and scope of the invention `as claimed.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a sharpening machine the combination of a pair of rotatable sharpening elements, of a work holder composed of a single piece of metal bent at its medial line to 4form a pair of clamping'jaws, a horizontal axis for said holder, an adjustable clamping element carried by said jaws, a pair of oppositely arranged integral spring tongues at one end of said jaws, a cam carried by said sharpening elements adapted to alternately contact with said spring tongues to oscillate the work holder.

2. A sharpening machine of the class de scribed comprising a casing, a pair of closely spaced rotatable elements mounted therein, means for imparting motion to said elements simultaneously, a horizontal axis removably positioned in notches in the upper edge of said casing, a, substantially rectangular piece of metal, bent at its medial line around said axis to form work holding jaws, an adjustable clamping element carried by said jaws, a pair of outwardly extending opposed integral spring tongues at one end of said jaws, and cams carried by said rotatable sharpening elements adapted to alternately contact with said spring tongues.

4In testimony whereof, I affix my signature hereto.

PETER D. IIAUSER. 

